The lowest frequency of sounds that can be heard by humans is 20 hertz. The maximum pressure P produced from a sound with a frequency of 20 hertz is 0.02 millipascal. Write a sine model that gives the pressure P as a function of the time t (in seconds).

Suppose there are 10 five and six-year-old attending a birthday party. when a 30 year old mother walks into the room with an infant in her arms, what happens to the mean age in the room? what happens to the standard deviation of ages in the room? a. the mean and standard deviation of both change. b. the meaning will change, but the standard deviation will stay approximately the same. c. i mean will stay approximately the same, but the standard deviation will change. d. the mean and standard deviation will both stay approximately the same.

In triangle opq right angled at p op=7cm, oq-pq=1 determine the values of sinq and cosq

The longer leg of a 30° 60° 90° triangle is 16 times square root of three how long is a shorter leg